<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="shortcut icon" href="img/favicon.ico" type="images/x-icon" />
    <title>图书管理系统</title>
    <style>
        body {
            padding: 0px;
            margin: 0px;
            overflow: hidden;
        }

        #top {
            width: 100%;
            height: 70px;
            background-color: rgb(32, 175, 118);
        }

        #top span {
            /* 右浮动 */
            float: right;
            font-size: 30px;
            /* 顶部留白 */
            margin-top: 20px;
            /* 右边留白 */
            margin-right: 100px;
            color: white;
        }

        #top a {
            /* 块状显示 */
            display: block;
            width: 100px;
            height: 40px;
            background-color: yellow;
            /* 右浮动 */
            float: right;
            /* 字体大小 */
            font-size: 25px;
            /* 距离顶部距离 */
            margin-top: 18px;
            /* 文本居中 */
            text-align: center;
            /* 上下居中 */
            line-height: 40px;
            /* 圆角 */
            border-radius: 10px;
            /* 右边留白 */
            margin-right: 50px;
            /* 去掉下划线 */
            text-decoration: none;
        }

        #bottom {
            width: 100%;
            height: 550px;
            /*  background-color: bisque; */
        }

        #left {
            width: 15%;
            height: 100vh;
            background-color: rgb(46, 120, 139);
            float: left;
        }

        #left ul {
            margin-top: 70px;
        }

        #left ul li {
            /* 去掉前面的点 */
            list-style-type: none;
            font-size: 30px;
            margin-top: 30px;
        }

        #left ul li a {
            color: white;
            /* 去掉下划线 */
            text-decoration: none;
        }


        #right {
            width: 85%;
            height: 100vh;
            /* background-color: brown; */
            float: left;
        }
    </style>
</head>

<body>
    <!-- 头部 -->
    <div id="top">
        <a href="/">注销</a> <span>欢迎admin登录</span>
    </div>
    <!-- 底部 -->
    <div id="bottom">
        <!-- 左边 -->
        <div id="left">
            <ul>
                <li><a href="/list" target="show">图书列表</a></li>
                <li><a href="javascript:void(0);" target="show">九宫图格</a></li>
                <li><a href="javascript:void(0);" target="show">课程表格</a></li>
                <li><a href="javascript:void(0);" target="show">蓝桥官网</a></li>
                <li><a href="javascript:void(0);" target="show">开源中国</a></li>
                <li><a href="javascript:void(0);" target="show">菜鸟教程</a></li>
            </ul>
        </div>
        <!-- 右边 -->
        <div id="right">
            <iframe name="show" src="/list" width="100%" height="835px" />
        </div>
    </div>
</body>

</html>